Gun-lock assembly

ABSTRACT

A gun-lock assembly of a toy gun is disclosed to have a gasket ring mounted on the periphery of a piston near its rear end and peripherally stopped at the peripheral wall of an accommodation chamber of the gun-lock housing. When an intake flow of gas is guided into the piston, the gasket ring is moved with the piston relative to the housing to extend an airtight space in the accommodation chamber for receiving the intake flow of gas to enhance the recoil of the toy gun.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to gun lock technology and moreparticularly, to a gun-lock assembly of a toy gun, which greatlyenhances the recoil of the toy gun.

2. Description of the Related Art

Regular toy air-soft guns are designed like a real gun. These toyair-soft guns have the same outer appearance of a real gun. They operatein the same manner as a real gun. Further, similar to a real gun, thesetoy air-soft guns produce a recoil upon shooting.

Further, the strength of the firing force and recoil of a toy air-softgun has a greatly concern with the design of the gun-lock assembly.FIGS. 1 and 2 show a gun-lock assembly a of a toy air-soft gun accordingto the prior art. According to this design, the gun-lock assembly acomprises a housing 10 and a piston 20. The housing 10 comprises anaccommodation chamber 101 (see FIGS. 2 and 3) for accommodating thepiston 20, and opening 102 transversely extending across the middle partat a rear side relative to the accommodation chamber 101 within which ahammer 30 of a firing control mechanism b is moved (see FIGS. 1 and 3),and an end block 40 affixed to the rear end of the accommodation chamber101. The end block 40 has a gasket ring (rubber ring) 401 mountedthereon.

The piston 20 is inserted through the front end of the housing 10 intothe inside of the accommodation chamber 101. The piston 20 has a steppedaxial hole 202 axially extending through the front and rear endsthereof, a radial gas inlet 201 located on the periphery incommunication with the axial hole 202 (see FIG. 3). Further, a firstspring member 50 mounted in the stepped axial hole 202 near the frontend of the piston 20, and a stopper bolt 203 is supported on the firstspring member 50 axially movable in the stepped axial hole 202 betweentwo positions to close/open the stepped axial hole 202. Further, asecond spring member 60 is mounted in the stepped axial hole 202 of thepiston 20 and affixed with its front end to the inside wall of thepiston 20 and its rear end to the end block 40. By means of thearrangement of the second spring member 60, the piston 20 is axiallymovable in the accommodation chamber 101 of the housing 10 (see FIGS. 3and 4). Further, the piston 20 has a rear hole 204 on the rear end.Normally, the piston 20 is not moved in the accommodation chamber 101 ofthe housing 10, and the spring force of the second spring member 60causes the rear hole 204 of the piston 20 to be stopped by the end block40 at the rear end of the accommodation chamber 101 (see FIG. 3).

When a user operated the firing control mechanism b to strike the hammer30, a flow of gas is discharged from a gas supply unit 70 through thegas inlet 201 into the stepped axial hole 202 of the piston 20. At thistime, the intake flow of gas flows partially toward the front end of thepiston 20 and partially toward the rear end of the piston 20 (see FIG.4). The forward flowing of the intake flow of gas forces forwards thestopper bolt 203 forwards to close the stepped axial hole 202 (see FIG.4). Thereafter, all the intake flow of gas flows toward the rear end ofthe piston 20. At this time, the gasket ring 401 is stopped against theinside wall of the piston 20, keeping the piston 20 in an airtightstatus, and the continuous flow of gas imparts a pressure to the endblock 40 and the housing 10 against the piston 20, thereby causing thehousing 10 to be moved backwards through a predetermined distance, andtherefore a recoil is produced When the supply of gas is stopped, thehousing 10 is not moved backwards further, and the second spring member60 returns the piston 20 to its former position (see FIG. 5).

As stated above, when a flow of gas enters the piston 20 to impart apressure to the end block 40, a recoil is produced. However, due tolimited airtight space behind the end block 40, the strength of therecoil produced upon a backward displacement of the housing 10 islimited, lowering the lifelike effect. Therefore, an improvement is thisregard is necessary.

SUMMARY OF THE INVENTION

The present invention has been accomplished under the circumstances inview. It is one object of the present invention to provide a gun-lockassembly for toy gun, which enhances the recoil of the toy gun.

To achieve this and other objects of the present invention, a gun-lockassembly comprises a housing, a piston, a first spring member, a stopperbolt, a second spring member and a gasket ring. The housing comprises anaccommodation chamber longitudinally extending through front and rearends thereof, an opening transversely extending across a middle partthereof at a rear side relative to the accommodation chamber forallowing movement of a hammer of a firing control mechanism, and an endblock affixed to the rear end thereof. The piston is inserted throughthe front end of the housing into the accommodation chamber, comprisinga stepped axial hole axially extending through front and rear endsthereof and a radial gas inlet located on the periphery thereof incommunication with the stepped axial hole. The first spring member ismounted in the stepped axial hole near the front end of the piston. Thestopper bolt is supported on the first spring member and movable toclose the front end of the piston upon a supply of a forced flow of gasthrough the radial gas inlet into the stepped axial hole. The secondspring member is mounted in the stepped axial hole and connected betweenthe inside wall of the piston and the end block. The gasket ring ismounted on the periphery of the piston near the rear end of the pistonand peripherally stopped at the peripheral wall of the accommodationchamber of the housing. The gasket ring is movable with the pistonrelative to the housing to extend an airtight space in the accommodationchamber for receiving a supply of a forced flow of gasp therebyenhancing the recoil of the toy gun.

Further, the piston has a rear hole on the rear end thereof. The rearhole of the piston is stopped by the end block before the supply of aflow of gas through the radial gas inlet into the stepped axial hole.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an elevational view of a gun-lock assembly in a toy gunaccording to the prior art.

FIG. 2 is an exploded view of the gun-lock assembly shown in FIG. 1.

FIG. 3 is a plain view of the gun-lock assembly shown in FIG. 1.

FIG. 4 is a schematic drawing showing the prior art gun-lock assembly inaction (I).

FIG. 5 is a schematic drawing showing the prior art gun-lock assembly inaction (II).

FIG. 6 is an exploded view of a gun-lock assembly of a toy gun inaccordance with the present invention.

FIG. 7 is a plain assembly view of FIG. 6.

FIG. 8 is a schematic drawing showing the gun-lock assembly of thepresent invention in action (I).

FIG. 9 is a schematic drawing showing the gun-lock assembly of thepresent invention in action (II).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 6 and 7, a gun-lock assembly A of a toy gun is showncomprising a housing 1 and a piston 2.

The housing 1 has an accommodation chamber 11 defined therein andlongitudinally extending through front and rear ends thereof, an opening12 transversely extending across the middle part thereof behind theaccommodation chamber 11 within which a hammer 3 of a firing controlmechanism B is moved (see FIG. 7), and an end block 4 affixed to therear end of the accommodation chamber 11.

The piston 2 is inserted through the front end of the housing 1 into theinside of the accommodation chamber 11. The piston 2 has a stepped axialhole 22 axially extending through the front and rear ends thereof, aradial gas inlet 21 located on the periphery in communication with theaxial hole 22. Further, a first spring member 5 mounted in the steppedaxial hole 22 near the front end of the piston 2, and a stopper bolt 23is supported on the first spring member 5 axially movable in the steppedaxial hole 22 between two positions to close/open the stepped axial hole22. Normally, the stopper bolt 23 is supported on the first springmember 5 in the open position where the stepped axial hole 22 is opened.When a flow of gas enters the radial gas inlet 21, the stopper bolt 23is forced forwards by the pressure of the intake flow of gas to compressthe first spring member 5 and to further close the stepped axial hole 22(see FIG. 8). Further, a second spring member 6 is mounted in thestepped axial hole 22 of the piston 2 and affixed with its front end tothe inside wall of the piston 2 and its rear end to the end block 4. Bymeans of the arrangement of the second spring member 6, the piston 2 isaxially movable in the accommodation chamber 11 of the housing 1.Further, a gasket ring 7 is mounted on the periphery of the piston 2near its rear end and stopped at the peripheral wall of theaccommodation chamber 11 of the housing 1 (see FIGS. 7 and 8).

Further, the piston 2 has a rear hole 24 on the rear end. Normally, thepiston 2 is not moved in the accommodation chamber 11 of the housing 1,and the spring force of the second spring member 6 causes the rear hole24 of the piston 2 to be stopped by the end block 4 at the rear end ofthe accommodation chamber 11 (see FIG. 7).

When a user operated the firing control mechanism B to strike the hammer3, a flow of gas is discharged front a gas supply unit 8 through the gasinlet 21 into the stepped axial hole 22 of the piston 2. At this time,the intake flow of gas flows partially toward the front end of thepiston 2 and partially toward the rear end of the piston 2 (see FIG. 7).The forward flowing of the intake flow of gas forces forwards thestopper bolt 23 forwards to close the stepped axial hole 22 (see FIG.8). Thereafter, all the intake flow of gas flows toward the rear end ofthe piston 2 to impart a pressure to the end block 4 and the housing 1against the piston 2, thereby opening the rear hole 24 of the piston 2from the end block 4 for the passing of the intake flow of gas to theinside of the accommodation chamber 11 of the housing 1 (see FIG. 8). Atthis time, the airtight space in the accommodation chamber 11 isextended. Subject to the equation of Force(F)=Pressure(P)×Area(A), theinvention greatly enhances the recoil of the toy gun when compared tothe prior an design. After a predetermined backward displacement of thehousing 1, the supply of gas is stopped, and the second spring member 6returns to its former shape, thereby returning the piston 2 to itsformer position (see FIG. 9).

As stated above, when the intake flow of gas wholly moves toward therear end of the piston 2, the gasket ring 7 is moved with the piston 2relative to the housing 1 for allowing the intake flow of gas to flowthrough the rear hole 24 of the piston 2 into the tensed of theaccommodation chamber 11 of the housing 1 to extend the area of theaccommodation chamber 11. By means of extending the area of theaccommodation chamber 11, the recoil of the toy gun is relativelyenhanced.

A prototype of gun-lock assembly has been constructed with the featuresof FIGS. 6˜9. The gun-lock assembly functions smoothly to provide all ofthe features disclosed earlier.

Although a particular embodiment of the invention has been described indetail for purposes of illustration, various modifications andenhancements may be made without departing from the spirit and scope ofthe invention. Accordingly, the invention is not to be limited except asby the appended claims.

1. A gun-lock assembly, comprising: a housing, said housing comprisingan accommodation chamber longitudinally extending through front and rearends thereof, an opening transversely extending across a middle partthereof at a rear side relative to said accommodation chamber forallowing movement of a hammer of a firing control mechanism, and an endblock affixed to the rear end thereof; a piston inserted through thefront end of said housing into said accommodation chamber, said pistoncomprising a stepped axial hole axially extending through front and rearends thereof and a radial gas inlet located on the periphery thereof incommunication with said stepped axial hole; a first spring membermounted in said stepped axial hole near the front end of said piston; astopper bolt supported on said first spring member and movable to closethe front end of said piston upon a supply of a forced flow of gasthrough said radial gas inlet into said stepped axial hole; a secondspring member mounted in said stepped axial hole and connected betweenan inside wall of said piston and said end block; wherein a gasket ringis mounted on the periphery of said piston near the rear end of saidpiston and peripherally stopped at the peripheral wall of saidaccommodation chamber of said housing, said gasket ring being movablewith said piston relative to said housing to extend an airtight space insaid accommodation chamber for receiving a supply of a forced flow ofgas.
 2. The gun-lock assembly as claimed in claim 1, wherein said pistonhas a rear hole on the rear end thereof; said rear hole being stopped bysaid end block before the supply of a flow of gas through said radialgas inlet into said stepped axial hole.